I was considering taking this stack called "Flex Stack" by NDS. The stack includes N-TEST 600 and Z-TEST. I usally like to do research on products before I take them but I cant find any info or reviews of the side effects from this product. My question is will any of these ingredience have negative side effects? Im 20 years old and had been natural bodybuilding for 4 years now. The link below is the stack and the ingredient listing:
PMD® Flex Stack® - NDS Nutrition
PMD® Flex Stack® - NDS Nutrition